The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 231

मनो होच्चक्राम तत्संवत्सरं प्रोष्य पर्ये-त्योवाच कथमशकतर्ते मज्जीवितुमितियथा बाला अमनसः प्राणन्तः प्राणेनवदन्तो वाचा पश्यन्तश्चक्षुषा शृण्वन्तःश्रोत्रेणैवामिति प्रविवेश ह मनः ॥ ११ ॥

In plain words

The mind departed. Having stayed away for a full year, it returned and asked, 'How were you able to live without me?' Just like infants who lack a fully formed mind, yet breathe through breath, speak through speech, see through sight, and hear through hearing—the mind re-entered.

Close to the Sanskrit

Mind indeed departed. Having stayed away for a year, it returned and said: 'How were you able to live without me?' Just as infants, mindless, breathing by breath, speaking by speech, seeing by sight, hearing by ear indeed thus, mind entered indeed.